Silo door



Jan. 23, 1945. M. GoLDBl-:CK 2,367,720

SILO DOOR Filed Aug. 4, 1941 3 Sheets-Sheet 1 Jan. 23, 1945. M, GOLDBECK 2,367,720

SILO DOOR Filed Aug. 4, 1941 3 Sheets-Sheet 2 p. pag-5. H5115- v a 20 fr 2f I g// /3 ,I i i 4 l I I @l 3] I m3 j f Jam 23, H945. M. GOLDBECK 2,367,720 l sILQ DOOR Filed Aug. 4, 1941 3 Sheets-Sheet 3 www Patented Jan. 23, 1945 UNITED STATES PATENT OFFICE slLo Doon Martin Goldbeek, Kansas City, M0.

Application August 4, 1941, Serial No. 405,401

(Cl. ca -1.4)

Claims.

My inventio-n, which relates generally to the construction or" silos, has particular reference to the doors thereof.

Primarily my present invention has for its objects: to provide a strong, rigid door-frame having provision for cooperating with the staves of tiles comprising the subject, matter of my application for patent filed June 20, 1941, Ser. No. 399,025, and that of my Patent No. 2,247,836, issued July 1, 1941; to provide a door-frame by means of which the tensile stresses of the hoops, intercepted by the door openings are absorbed in the door-frames-proper; and to provide a door-frame having provisions for supporting a ladder -unit overlying the masonry interval between the doors in silos where such interval occurs.

Other objects will .in part be obvious and in part be pointed out hereinafter.

To the attainment of the aforesaid objects and ends the invention still further resides in the novel details of construction, combination and arrangement of parts, all of which will be iirst fully described in the following detailed description, and then be particularly pointed out in the appended claims, reference being lhad to the accompanying' drawings, in which:

Fig. 1 is a front elevation of a door unit embodying my invention, the silo hoops being indicated in dotted lines.

Fig. 2 is a horizontal section on the line 2--2 of Fig. 11, the adjacent staves of the silo being shown in horizontal section.

Fig. 3 is a detail section on the line '3 3 of Fig. 1, showing one of the door latches.

Figfi is a detail section on the line 4 4 of Fig. 1.

Fig. 5 is a detail vertical section of two frames of a continuous door arrangement.

Fig. 6 is a detail side elevation of the frame per se shown in Fig. 1, looking from left to right in that iigure.

Fig. '7 is an enlarged detail front elevation showing the interlocking of the upper and lower frames.

Fig. 8 is a vertical section on the line 8 8 of Fig. '7.

Fig. 9 is a detail front elevation of a portion of a modified frame.

Fig. 10 is a detail section on line lll- Ill of Fig. 9.

Fig. 1l is a detail elevation of a portion of a silo showing the construction where the doors are not continuous.

Fig.' 12 is a detail perspective view of one of the ladders which are supported by the door frames over intervening masonry.

Fig. 13 is a detail cross section on the line iS--IS of Fig. 1.

In the drawings, in which like numerals' of reference indicate like parts in all the iigures, 1 represents the inner faces of the tiles constituting the staves adjacent the sides of the doorframes, 2 the outer faces, and 3 the vertical side walls having grooves 4 to receive expansionjoint strips 6, grooves 5 to receive the lockingv medium l, and grooves 8 to receive the strips of wood or other damstrips 9, all of which may be of similar construction to that-for exampleof the tiles-staves of my application Ser. No. 399,025. v

The door-frame (for an individual opening) comprises a rectangular casting composed of top, bottom and side walls I0. The top and bottomy walls are iiat and have plane outer faces 20, save for the presence at the sides and center of hoopseating lugs Il, having arcuate seats I8 for the silo-encircling hoops 23.

The sides of the frame I0 have vertical ribs Il, front iianges l5 and vertical grooves l2, the grooves l2 serving to cooperate with the grooves' 8 to receive the wood (or other suitable material) dam strips 9.

The vertical sides of the frame l0 also have surfaces I3 to oppose the grooves 5 of the adjacent staves and convex surfaces I4 to oppose the grooves 4 and cooperate therewith and with the expansion strips 6. The spaces between the surfaces I3 and the adjacent staves are filled with the slab-locking medium l,

On the inner walls (top, bottom and sides) of the frame ID are the door stops formed by the ribs I6.

The frames, which are of such heights that the door openings interrupt hoops 23, are provided with integral lugs 22 through which the ends of the silo-encircling hoops are passed and placed under tension by means of nuts 24, thus tending to squeeze the walls I at the sides of the door openings in the direction of the arrows a in Fig. 2. Those frames which have the lugs 22v also have front flanges l5 of varying widths, the width depending on the number of lugs 22. For instance, when three lugs to a side are necessary, the flanges I5 are of the maximum Width shown, but when only one or two lugs per side are used the flanges need to be only about one-half of those shown in Fig. 1, and when no lugs are necessary the flanges are narrowed still further, as at I5a4 in Fig. 9.

When a continuous series of door units is employed, i. e., where one unit is placed directly on top of another, without staves or tiles intervening (see Figs. 5, 7 and 8), one unit may have the lugs I1 (top and bottom) while the next adjacent units may have lug sockets I9 into which the lugs I1 set, horizontal expansion joints 2| being inserted between the superposed units, as shown. Instead of one unit having the lugs I1 and the adjacent units having the lug sockets I9, one unit, obviously, may have lugs Ila, say on the bottom wall, and sockets I9a on the top wall (see Fig. 9) if desired.

When a continuous series of doors is employed in the silo, single rung ladders 38 (Fig.5) may be employed and their Vertical legs 39 then pass through the lower lugs 3I of one frame unit and the upper lugs Sla of the unit below, and thus cooperate with the lugs I1 and sockets I9 (or I1a and ISE) in locking adjacent frames together.

Sockets 25 are provided in the top and bottom walls of the frame Ill to receive the pivot ends 21 of the door-carrying U-shaped member 26, bearings 28 being provided for the member 25 on the door 29. The axes of the sockets 25 align with each other and the axes of the bearings 28 align with each other, the axes of sockets 25 and bearings 28 being vertically disposed.

The door 29 is formed of front and back sections composed oi horizontal and vertical tongue and grooved boards respectively, with an acid-resisting gasket sheet 30 located between them.

Suitable latches 35 are provided and pivoted at 31 to the door to engage over the side door stops I6.

The frame I is preferably provided with top and bottom ladder supporting lugs 3| to receive the down-turned ends 34A of the rearwardly projecting portions 33 of the ladder-sides S2 to which the rungs 35 are welded, as at w.

The ladders 33, 33, 34, 35 overlie the masonry intervals between adjacent door frames, while the doors 29 have individual ladder elements of any approved construction, such, for example, as that illustrated in Figs. 1, .ll and 13, by reference to which it will be seen that brackets d have feet 4I bolted at 42 to each door, and a rung 43 welded to the brackets. I

In Figs. 9 and 10 those parts which correspond to similar parts in the other gures bear the same reference numbers followed by the index letter a.

From the foregoing it will be seen that when the hoops 23 are tightened the flanges I5 will be held up tight against the faces of the adjacent staves and, owing to the rigidity of the frame Ill, the tension of the hoops 23 which are attached to the lugs 22 is absorbed by the frame, which, in eiect, serves as a non-stretchable link between the ends of those hoops. Also, the construction of the sides of the frame provides a bonding and sealing of the joints between the frame and staves which is as eective as that between adjacent staves.

Other advantages of my improved door unit construction will be apparent to those skilled in the art, and changes in the proportions of parts and other modications than those heretofore mentioned can be made without departing from the spirit of my invention and from the scope of the appended claims.

What I claim is:

1. In a silo, a plurality of superposed door frames each including top, bottom and side walls, expansion joint slabs located between the frames, interlocking hoop-receiving lugs and sockets connecting adjacent frames together, a top and a bottom forwardly projecting apertured lug in vertical alignment with each other at each side of the frame, and means passing through said apertured lugs for securing the frames together.

2. In a silo, a plurality of superposed door frames each including top, bottom and side walls, expansion joint slabs located between the frames, interlocking hoop-receiving lugs and sockets connecting adjacent frames together, a top and a bottom forwardly projecting apertured lug in vertical alignment with each other at each side of the frames, and means passing through said apertured lugs for securing the frames together, said means overlying the hoop-receiving lugs.

3. An article of manufacture comprising a cast metal door frame of a rectangular form having continuous-hoop receiving lugs projecting from one vertical end of the frame and corresponding lug-receiving recesses in the other vertical end of the frame, by virtue of which when one frame is set on top of another frame of like construction the frames will be interlocked against transverse displacement of one frame with respect to the other frame.

4. An article of manufacture comprising a cast metal door` frame of rectangular form having continuous-loop receiving lugs projecting from one vertical end of the frame and corresponding lugreceiving sockets in the other vertical end of the frame, and apertured lugs projecting forwardly from the face of the frame and located adjacent the top and bottom portions of the frame, said apertured lugs, when two or more frames are assembled, serving to receive elements to connect the lugs of oneframe to the lugs of the adjacent frame or frames thereby to prevent forward and backward movement or" one frame on another.

5. An article of manufacture comprising a cast metal door frame of a rectangular form having continuous-hoop receiving lugs projecting from one vertical end of the frame and corresponding lug-receiving recesses in the other vertical end of the frame, by virtue of which when one frame is set on top of another frame of like construction the frames will be interlocked against transverse movement of one frame on the other, the' hoopreceiving lugs of the frame being of greater depth than the lug-receiving recesses, by virtue of which when one frame is set on top of another frame of like construction with the lugs of the one in the recesses of the other the frames will be spaced apart suliciently to receive between them a sealing material.

MARTIN GOLDBECK. 

